feat: integrate Uptime Kuma and Alertmanager into Docker setup

- Add Uptime Kuma service for status monitoring with health checks.
- Introduce Alertmanager service for alert management and notifications.
- Update docker-compose.yml to include new services and their configurations.
- Enhance Makefile with commands for managing Uptime Kuma and Alertmanager logs.
- Modify Ansible playbook to install necessary packages and configure SSL for new services.
- Update Nginx configuration to route traffic to Uptime Kuma and Alertmanager.
- Adjust Prometheus configuration to include alert rules and external URLs.

infra/nginx/ssl/letsencrypt.conf

@@ -0,0 +1,27 @@
+# Let's Encrypt SSL Configuration
+# This file contains the SSL configuration for Let's Encrypt certificates
+
+# SSL certificate paths (Let's Encrypt)
+ssl_certificate /etc/letsencrypt/live/{{DOMAIN}}/fullchain.pem;
+ssl_certificate_key /etc/letsencrypt/live/{{DOMAIN}}/privkey.pem;
+
+# SSL Security Configuration
+ssl_protocols TLSv1.2 TLSv1.3;
+ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA384;
+ssl_prefer_server_ciphers off;
+ssl_session_cache shared:SSL:10m;
+ssl_session_timeout 10m;
+ssl_session_tickets off;
+
+# OCSP Stapling
+ssl_stapling on;
+ssl_stapling_verify on;
+ssl_trusted_certificate /etc/letsencrypt/live/{{DOMAIN}}/chain.pem;
+
+# Security Headers
+add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
+add_header X-Frame-Options "SAMEORIGIN" always;
+add_header X-Content-Type-Options "nosniff" always;
+add_header X-XSS-Protection "1; mode=block" always;
+add_header Referrer-Policy "strict-origin-when-cross-origin" always;
+add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; font-src 'self' data:; connect-src 'self' wss: https:;" always;